Method for treating lactams
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United States of America Patent
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May 30, 2000
Grant Date -
N/A
app pub date -
Jul 27, 1999
filing date -
Oct 24, 1996
priority date (Note) -
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Abstract
The present invention relates to the treatment of lactams obtained directly from their synthesis process, avoiding the formation of oligomers as far as possible. The invention consists, more precisely, of a process for treating a lactam using the reaction flow obtained from a cyclizing hydrolysis of an aminonitrile, characterized in that the reaction flow leaving the hydrolysis reactor is cooled, over a period of less than or equal to 1 hour, to a temperature below or equal to 150.degree. C. before it is fractionated.
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Family
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